mirror of https://git.ffmpeg.org/ffmpeg.git
61 lines
2.0 KiB
NASM
61 lines
2.0 KiB
NASM
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;*****************************************************************************
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;* x86-optimized functions for afir filter
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;* Copyright (c) 2017 Paul B Mahol
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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/x86/x86util.asm"
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SECTION .text
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;------------------------------------------------------------------------------
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; void ff_fcmul_add(float *sum, const float *t, const float *c, int len)
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;------------------------------------------------------------------------------
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INIT_XMM sse3
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cglobal fcmul_add, 4,4,6, sum, t, c, len
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shl lend, 3
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add lend, mmsize*2
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add tq, lenq
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add cq, lenq
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add sumq, lenq
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neg lenq
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ALIGN 16
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.loop:
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movsldup m0, [tq + lenq]
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movsldup m3, [tq + lenq+mmsize]
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movaps m1, [cq + lenq]
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movaps m4, [cq + lenq+mmsize]
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mulps m0, m1
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mulps m3, m4
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shufps m1, m1, 0xb1
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shufps m4, m4, 0xb1
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movshdup m2, [tq + lenq]
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movshdup m5, [tq + lenq+mmsize]
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mulps m2, m1
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mulps m5, m4
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addsubps m0, m2
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addsubps m3, m5
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addps m0, [sumq + lenq]
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addps m3, [sumq + lenq+mmsize]
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movaps [sumq + lenq], m0
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movaps [sumq + lenq+mmsize], m3
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add lenq, mmsize*2
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jl .loop
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REP_RET
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