mirror of https://git.ffmpeg.org/ffmpeg.git
75 lines
1.8 KiB
NASM
75 lines
1.8 KiB
NASM
;*****************************************************************************
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;* x86-optimized functions for scene SAD
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;*
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;* Copyright (C) 2018 Marton Balint
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;*
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;* Based on vf_blend.asm, Copyright (C) 2015 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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%macro SAD_INIT 0
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cglobal scene_sad, 6, 7, 2, src1, stride1, src2, stride2, width, end, x
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add src1q, widthq
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add src2q, widthq
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neg widthq
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pxor m1, m1
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%endmacro
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%macro SAD_LOOP 0
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.nextrow:
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mov xq, widthq
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.loop:
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movu m0, [src1q + xq]
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psadbw m0, [src2q + xq]
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paddq m1, m0
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add xq, mmsize
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jl .loop
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add src1q, stride1q
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add src2q, stride2q
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sub endd, 1
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jg .nextrow
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mov r0q, r6mp
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movu [r0q], m1 ; sum
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RET
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%endmacro
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%macro SAD_FRAMES 0
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SAD_INIT
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SAD_LOOP
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%endmacro
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INIT_XMM sse2
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SAD_FRAMES
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%if HAVE_AVX2_EXTERNAL
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INIT_YMM avx2
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SAD_FRAMES
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%endif
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