FFmpeg
libavcodec
x86
pngdsp_init.c
Go to the documentation of this file.
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/*
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* x86 PNG optimizations.
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* Copyright (c) 2008 Loren Merrit <lorenm@u.washington.edu>
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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 <stdint.h>
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#include "
libavutil/attributes.h
"
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#include "
libavutil/x86/cpu.h
"
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#include "
libavcodec/pngdsp.h
"
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void
ff_add_png_paeth_prediction_mmxext
(uint8_t *dst, uint8_t *
src
,
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uint8_t *top,
int
w
,
int
bpp);
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void
ff_add_png_paeth_prediction_ssse3
(uint8_t *dst, uint8_t *
src
,
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uint8_t *top,
int
w
,
int
bpp);
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void
ff_add_bytes_l2_sse2
(uint8_t *dst, uint8_t *
src1
,
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uint8_t *
src2
,
int
w
);
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av_cold
void
ff_pngdsp_init_x86
(
PNGDSPContext
*dsp)
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{
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int
cpu_flags
=
av_get_cpu_flags
();
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if
(
EXTERNAL_MMXEXT
(
cpu_flags
))
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dsp->
add_paeth_prediction
=
ff_add_png_paeth_prediction_mmxext
;
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if
(
EXTERNAL_SSE2
(
cpu_flags
))
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dsp->
add_bytes_l2
=
ff_add_bytes_l2_sse2
;
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if
(
EXTERNAL_SSSE3
(
cpu_flags
))
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dsp->
add_paeth_prediction
=
ff_add_png_paeth_prediction_ssse3
;
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}
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:103
cpu_flags
static atomic_int cpu_flags
Definition:
cpu.c:52
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)
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
src
INIT_CLIP pixel * src
Definition:
h264pred_template.c:418
EXTERNAL_SSSE3
#define EXTERNAL_SSSE3(flags)
Definition:
cpu.h:65
EXTERNAL_MMXEXT
#define EXTERNAL_MMXEXT(flags)
Definition:
cpu.h:57
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