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libavutil/x86/fixed_dsp.asm
48 строк
2 KB
Alexander Kanavin
libavutil: include assembly with full path from source root
08 фев 2022, 12:42
08 фев 2022, 12:42
91326dc
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;***************************************************************************** ;* 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 "libavutil/x86/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