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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 Libav.
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*
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* Libav 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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* Libav 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 Libav; 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,
int
line_size);
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void
ff_get_pixels_sse2
(int16_t *
block
,
const
uint8_t
*pixels,
int
line_size);
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void
ff_diff_pixels_mmx
(int16_t *
block
,
const
uint8_t
*s1,
const
uint8_t
*s2,
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int
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
=
ff_get_pixels_mmx
;
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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
=
ff_get_pixels_sse2
;
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}
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}
EXTERNAL_MMX
#define EXTERNAL_MMX(flags)
Definition:
cpu.h:47
pixblockdsp.h
cpu.h
stride
int stride
Definition:
mace.c:144
attributes.h
Macro definitions for various function/variable attributes.
uint8_t
uint8_t
Definition:
audio_convert.c:194
av_cold
#define av_cold
Definition:
attributes.h:66
ff_get_pixels_mmx
void ff_get_pixels_mmx(int16_t *block, const uint8_t *pixels, int line_size)
EXTERNAL_SSE2
#define EXTERNAL_SSE2(flags)
Definition:
cpu.h:50
PixblockDSPContext::get_pixels
void(* get_pixels)(int16_t *block, const uint8_t *pixels, int line_size)
Definition:
pixblockdsp.h:27
ff_get_pixels_sse2
void ff_get_pixels_sse2(int16_t *block, const uint8_t *pixels, int line_size)
cpu.h
AVCodecContext
main external API structure.
Definition:
avcodec.h:1050
ff_pixblockdsp_init_x86
av_cold void ff_pixblockdsp_init_x86(PixblockDSPContext *c, AVCodecContext *avctx, unsigned high_bit_depth)
Definition:
pixblockdsp_init.c:31
PixblockDSPContext
Definition:
pixblockdsp.h:26
ff_diff_pixels_mmx
void ff_diff_pixels_mmx(int16_t *block, const uint8_t *s1, const uint8_t *s2, int stride)
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition:
cpu.c:47
PixblockDSPContext::diff_pixels
void(* diff_pixels)(int16_t *block, const uint8_t *s1, const uint8_t *s2, int stride)
Definition:
pixblockdsp.h:30
block
static int16_t block[64]
Definition:
dct-test.c:88
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