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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_128: times 8 dw 128
pw_256: times 8 dw 256
SECTION .text
INIT_XMM sse2
%if ARCH_X86_64
cglobal maskedmerge8, 8, 11, 7, bsrc, osrc, msrc, dst, blinesize, olinesize, mlinesize, dlinesize, w, h, x
mov wd, dword wm
mov hd, dword hm
%else
cglobal maskedmerge8, 5, 7, 7, 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_256]
mova m5, [pw_128]
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
psrlw m1, 8
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
REP_RET
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