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libavcodec
x86
dnxhd_mmx.c
Go to the documentation of this file.
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/*
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* VC3/DNxHD SIMD functions
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* Copyright (c) 2007 Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>
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*
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* VC-3 encoder funded by the British Broadcasting Corporation
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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/x86_cpu.h
"
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#include "
libavcodec/dnxhdenc.h
"
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static
void
get_pixels_8x4_sym_sse2
(
DCTELEM
*
block
,
const
uint8_t *pixels,
int
line_size)
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{
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__asm__
volatile
(
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"pxor %%xmm5, %%xmm5 \n\t"
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"movq (%0), %%xmm0 \n\t"
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"add %2, %0 \n\t"
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"movq (%0), %%xmm1 \n\t"
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"movq (%0, %2), %%xmm2 \n\t"
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"movq (%0, %2,2), %%xmm3 \n\t"
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"punpcklbw %%xmm5, %%xmm0 \n\t"
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"punpcklbw %%xmm5, %%xmm1 \n\t"
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"punpcklbw %%xmm5, %%xmm2 \n\t"
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"punpcklbw %%xmm5, %%xmm3 \n\t"
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"movdqa %%xmm0, (%1) \n\t"
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"movdqa %%xmm1, 16(%1) \n\t"
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"movdqa %%xmm2, 32(%1) \n\t"
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"movdqa %%xmm3, 48(%1) \n\t"
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"movdqa %%xmm3 , 64(%1) \n\t"
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"movdqa %%xmm2 , 80(%1) \n\t"
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"movdqa %%xmm1 , 96(%1) \n\t"
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"movdqa %%xmm0, 112(%1) \n\t"
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:
"+r"
(pixels)
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:
"r"
(block),
"r"
((
x86_reg
)line_size)
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);
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}
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void
ff_dnxhd_init_mmx
(
DNXHDEncContext
*ctx)
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{
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if
(
av_get_cpu_flags
() &
AV_CPU_FLAG_SSE2
) {
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if
(ctx->
cid_table
->
bit_depth
== 8)
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ctx->
get_pixels_8x4_sym
=
get_pixels_8x4_sym_sse2
;
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}
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}
x86_reg
int x86_reg
Definition:
x86_cpu.h:68
ff_dnxhd_init_mmx
void ff_dnxhd_init_mmx(DNXHDEncContext *ctx)
Definition:
dnxhd_mmx.c:53
dnxhdenc.h
block
static DCTELEM block[64]
Definition:
dct-test.c:189
DNXHDEncContext::get_pixels_8x4_sym
void(* get_pixels_8x4_sym)(DCTELEM *, const uint8_t *, int)
Definition:
dnxhdenc.h:95
CIDEntry::bit_depth
int bit_depth
Definition:
dnxhddata.h:35
DNXHDEncContext
Definition:
dnxhdenc.h:42
DNXHDEncContext::cid_table
const CIDEntry * cid_table
Definition:
dnxhdenc.h:48
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition:
cpu.c:22
DCTELEM
short DCTELEM
Definition:
dsputil.h:39
get_pixels_8x4_sym_sse2
static void get_pixels_8x4_sym_sse2(DCTELEM *block, const uint8_t *pixels, int line_size)
Definition:
dnxhd_mmx.c:27
AV_CPU_FLAG_SSE2
#define AV_CPU_FLAG_SSE2
PIV SSE2 functions.
Definition:
cpu.h:31
x86_cpu.h