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;******************************************************************************
;* x86-optimized yuv2yuvX
;* Copyright 2020 Google LLC
;* Copyright (C) 2001-2011 Michael Niedermayer <michaelni@gmx.at>
;*
;* 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
;-----------------------------------------------------------------------------
; yuv2yuvX
;
; void ff_yuv2yuvX_<opt>(const int16_t *filter, int filterSize,
; int srcOffset, uint8_t *dest, int dstW,
; const uint8_t *dither, int offset);
;
;-----------------------------------------------------------------------------
%macro YUV2YUVX_FUNC 0
cglobal yuv2yuvX, 7, 7, 8, filter, filterSize, src, dest, dstW, dither, offset
%if notcpuflag(sse3)
%define movr mova
%define unroll 1
%else
%define movr movdqu
%define unroll 2
%endif
movsxdifnidn dstWq, dstWd
movsxdifnidn offsetq, offsetd
movsxdifnidn srcq, srcd
%if cpuflag(avx2)
vpbroadcastq m3, [ditherq]
%else
movq xm3, [ditherq]
%endif ; avx2
cmp offsetd, 0
jz .offset
; offset != 0 path.
psrlq m5, m3, $18
psllq m3, m3, $28
por m3, m3, m5
.offset:
add offsetq, srcq
movd xm1, filterSized
SPLATW m1, xm1, 0
pxor m0, m0, m0
mov filterSizeq, filterq
mov srcq, [filterSizeq]
punpcklbw m3, m0
psllw m1, m1, 3
paddw m3, m3, m1
psraw m7, m3, 4
.outerloop:
mova m4, m7
mova m3, m7
%if cpuflag(sse3)
mova m6, m7
mova m1, m7
%endif
.loop:
%if cpuflag(avx2)
vpbroadcastq m0, [filterSizeq + 8]
%elif cpuflag(sse3)
movddup m0, [filterSizeq + 8]
%else
mova m0, [filterSizeq + 8]
%endif
pmulhw m2, m0, [srcq + offsetq * 2]
pmulhw m5, m0, [srcq + offsetq * 2 + mmsize]
paddw m3, m3, m2
paddw m4, m4, m5
%if cpuflag(sse3)
pmulhw m2, m0, [srcq + offsetq * 2 + 2 * mmsize]
pmulhw m5, m0, [srcq + offsetq * 2 + 3 * mmsize]
paddw m6, m6, m2
paddw m1, m1, m5
%endif
add filterSizeq, $10
mov srcq, [filterSizeq]
test srcq, srcq
jnz .loop
psraw m3, m3, 3
psraw m4, m4, 3
%if cpuflag(sse3)
psraw m6, m6, 3
psraw m1, m1, 3
%endif
packuswb m3, m3, m4
%if cpuflag(sse3)
packuswb m6, m6, m1
%endif
mov srcq, [filterq]
%if cpuflag(avx2)
vpermq m3, m3, 216
vpermq m6, m6, 216
%endif
movr [destq + offsetq], m3
%if cpuflag(sse3)
movr [destq + offsetq + mmsize], m6
%endif
add offsetq, mmsize * unroll
mov filterSizeq, filterq
cmp offsetq, dstWq
jb .outerloop
RET
%endmacro
INIT_MMX mmxext
YUV2YUVX_FUNC
INIT_XMM sse3
YUV2YUVX_FUNC
%if HAVE_AVX2_EXTERNAL
INIT_YMM avx2
YUV2YUVX_FUNC
%endif
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