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x86/fixed_dsp: add ff_butterflies_fixed_sse2 

Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: James Almer <jamrial@gmail.com>
This commit is contained in:
James Almer 2016-01-15 22:04:09 -03:00
parent aa6aa2ef09
commit dee579ffcd
5 changed files with 90 additions and 0 deletions
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3
libavutil/fixed_dsp.c
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@ -160,5 +160,8 @@ AVFixedDSPContext * avpriv_alloc_fixed_dsp(int bit_exact)
fdsp->butterflies_fixed = butterflies_fixed_c;
fdsp->scalarproduct_fixed = scalarproduct_fixed_c;
if (ARCH_X86)
ff_fixed_dsp_init_x86(fdsp);
return fdsp;
}

2
libavutil/fixed_dsp.h
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@ -161,6 +161,8 @@ typedef struct AVFixedDSPContext {
*/
AVFixedDSPContext * avpriv_alloc_fixed_dsp(int strict);
void ff_fixed_dsp_init_x86(AVFixedDSPContext *fdsp);
/**
* Calculate the square root
*

2
libavutil/x86/Makefile
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@ -1,4 +1,5 @@
OBJS += x86/cpu.o \
x86/fixed_dsp_init.o \
x86/float_dsp_init.o \
x86/lls_init.o \
@ -8,6 +9,7 @@ EMMS_OBJS_$(HAVE_MMX_INLINE)_$(HAVE_MMX_EXTERNAL)_$(HAVE_MM_EMPTY) = x86/emms.o
YASM-OBJS += x86/cpuid.o \
$(EMMS_OBJS__yes_) \
x86/fixed_dsp.o \
x86/float_dsp.o \
x86/lls.o \

48
libavutil/x86/fixed_dsp.asm Normal file
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@ -0,0 +1,48 @@
;*****************************************************************************
;* x86-optimized Float DSP functions
;*
;* Copyright 2016 James Almer
;*
;* This file is part of FFmpeg.
;*
;* FFmpeg is free software; you can redistribute it and/or
;* modify it under the terms of the GNU Lesser General Public
;* License as published by the Free Software Foundation; either
;* version 2.1 of the License, or (at your option) any later version.
;*
;* FFmpeg is distributed in the hope that it will be useful,
;* but WITHOUT ANY WARRANTY; without even the implied warranty of
;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;* Lesser General Public License for more details.
;*
;* You should have received a copy of the GNU Lesser General Public
;* License along with FFmpeg; if not, write to the Free Software
;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
;******************************************************************************
%include "x86util.asm"
SECTION .text
;-----------------------------------------------------------------------------
; void ff_butterflies_fixed(float *src0, float *src1, int len);
;-----------------------------------------------------------------------------
INIT_XMM sse2
cglobal butterflies_fixed, 3,3,3, src0, src1, len
shl lend, 2
add src0q, lenq
add src1q, lenq
neg lenq
align 16
.loop:
mova m0, [src0q + lenq]
mova m1, [src1q + lenq]
mova m2, m0
paddd m0, m1
psubd m2, m1
mova [src0q + lenq], m0
mova [src1q + lenq], m2
add lenq, mmsize
jl .loop
RET

35
libavutil/x86/fixed_dsp_init.c Normal file
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@ -0,0 +1,35 @@
/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "config.h"
#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libavutil/fixed_dsp.h"
#include "cpu.h"
void ff_butterflies_fixed_sse2(int *src0, int *src1, int len);
av_cold void ff_fixed_dsp_init_x86(AVFixedDSPContext *fdsp)
{
int cpu_flags = av_get_cpu_flags();
if (EXTERNAL_SSE2(cpu_flags)) {
fdsp->butterflies_fixed = ff_butterflies_fixed_sse2;
}
}