f0313e9022
The attribution was removed by libav while moving the code to libavutil
The original code is from
commit eb4825b5d43bb6ecfae4d64688f9e2d2ac075263
Author: Loren Merritt <lorenm@u.washington.edu>
Date: Thu Aug 10 19:06:25 2006 +0000
sse and 3dnow implementations of float->int conversion and mdct windowing.
15% faster vorbis.
and
commit 069720565ce0f2cc94fa2474f30d155b2755e350
Author: Loren Merritt <lorenm@u.washington.edu>
Date: Fri Aug 11 18:19:37 2006 +0000
vorbis simd tweaks
Reviewed-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
58 lines
1.8 KiB
NASM
58 lines
1.8 KiB
NASM
;*****************************************************************************
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;* x86-optimized Float DSP functions
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;*
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;* Copyright 2006 Loren Merritt
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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 "x86inc.asm"
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SECTION .text
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;-----------------------------------------------------------------------------
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; void vector_fmul(float *dst, const float *src0, const float *src1, int len)
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;-----------------------------------------------------------------------------
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%macro VECTOR_FMUL 0
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cglobal vector_fmul, 4,4,2, dst, src0, src1, len
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lea lenq, [lend*4 - 2*mmsize]
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ALIGN 16
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.loop
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mova m0, [src0q + lenq]
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mova m1, [src0q + lenq + mmsize]
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mulps m0, m0, [src1q + lenq]
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mulps m1, m1, [src1q + lenq + mmsize]
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mova [dstq + lenq], m0
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mova [dstq + lenq + mmsize], m1
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sub lenq, 2*mmsize
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jge .loop
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%if mmsize == 32
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vzeroupper
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RET
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%else
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REP_RET
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%endif
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%endmacro
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INIT_XMM sse
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VECTOR_FMUL
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%if HAVE_AVX
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INIT_YMM avx
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VECTOR_FMUL
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%endif
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