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