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libavcodec
x86
fdctdsp_init.c
Go to the documentation of this file.
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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/avcodec.h
"
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#include "
libavcodec/fdctdsp.h
"
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#include "
fdct.h
"
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av_cold
void
ff_fdctdsp_init_x86
(
FDCTDSPContext
*
c
,
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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const
int
dct_algo = avctx->
dct_algo
;
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if
(!high_bit_depth) {
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if
((dct_algo ==
FF_DCT_AUTO
|| dct_algo ==
FF_DCT_MMX
)) {
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if
(
INLINE_MMX
(cpu_flags))
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c->
fdct
=
ff_fdct_mmx
;
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if
(
INLINE_MMXEXT
(cpu_flags))
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c->
fdct
=
ff_fdct_mmxext
;
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if
(
INLINE_SSE2
(cpu_flags))
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c->
fdct
=
ff_fdct_sse2
;
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}
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}
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}
fdct.h
AVCodecContext::dct_algo
int dct_algo
DCT algorithm, see FF_DCT_* below.
Definition:
avcodec.h:2668
ff_fdctdsp_init_x86
av_cold void ff_fdctdsp_init_x86(FDCTDSPContext *c, AVCodecContext *avctx, unsigned high_bit_depth)
Definition:
fdctdsp_init.c:26
INLINE_SSE2
#define INLINE_SSE2(flags)
Definition:
cpu.h:66
cpu.h
ff_fdct_mmxext
void ff_fdct_mmxext(int16_t *block)
FDCTDSPContext
Definition:
fdctdsp.h:26
attributes.h
Macro definitions for various function/variable attributes.
av_cold
#define av_cold
Definition:
attributes.h:74
ff_fdct_sse2
void ff_fdct_sse2(int16_t *block)
INLINE_MMX
#define INLINE_MMX(flags)
Definition:
cpu.h:63
fdctdsp.h
avcodec.h
Libavcodec external API header.
FF_DCT_AUTO
#define FF_DCT_AUTO
Definition:
avcodec.h:2669
ff_fdct_mmx
void ff_fdct_mmx(int16_t *block)
cpu.h
FDCTDSPContext::fdct
void(* fdct)(int16_t *block)
Definition:
fdctdsp.h:27
AVCodecContext
main external API structure.
Definition:
avcodec.h:1239
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition:
cpu.c:75
INLINE_MMXEXT
#define INLINE_MMXEXT(flags)
Definition:
cpu.h:64
c
static double c[64]
Definition:
vsrc_mptestsrc.c:87
FF_DCT_MMX
#define FF_DCT_MMX
Definition:
avcodec.h:2674
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