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;*****************************************************************************
;* x86-optimized functions for maskedmerge filter
;*
;* 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_RODATA
pw_127: times 8 dw 127
pw_255: times 8 dw 255
pw_32897: times 8 dw 32897
SECTION .text
INIT_XMM sse2
%if ARCH_X86_64
cglobal maskedmerge8, 8, 11, 8, bsrc, osrc, msrc, dst, blinesize, olinesize, mlinesize, dlinesize, w, h, x
mov wd, dword wm
mov hd, dword hm
%else
cglobal maskedmerge8, 5, 7, 8, bsrc, osrc, msrc, dst, blinesize, w, x
mov wd, r8m
%define olinesizeq r5mp
%define mlinesizeq r6mp
%define dlinesizeq r7mp
%define hd r9mp
%endif
mova m4, [pw_255]
mova m5, [pw_127]
mova m7, [pw_32897]
pxor m6, m6
add bsrcq, wq
add osrcq, wq
add msrcq, wq
add dstq, wq
neg wq
.nextrow:
mov xq, wq
.loop:
movh m0, [bsrcq + xq]
movh m1, [osrcq + xq]
movh m3, [msrcq + xq]
mova m2, m4
punpcklbw m0, m6
punpcklbw m1, m6
punpcklbw m3, m6
psubw m2, m3
pmullw m2, m0
pmullw m1, m3
paddw m1, m2
paddw m1, m5
pmulhuw m1, m7
psrlw m1, 7
packuswb m1, m1
movh [dstq + xq], m1
add xq, mmsize / 2
jl .loop
add bsrcq, blinesizeq
add osrcq, olinesizeq
add msrcq, mlinesizeq
add dstq, dlinesizeq
sub hd, 1
jg .nextrow
RET
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