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;*****************************************************************************
;* x86-optimized functions for blend 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_1: times 8 dw 1
pw_128: times 8 dw 128
pw_255: times 8 dw 255
pb_127: times 16 db 127
pb_128: times 16 db 128
pb_255: times 16 db 255
SECTION .text
%macro BLEND_INIT 2
%if ARCH_X86_64
cglobal blend_%1, 6, 9, %2, top, top_linesize, bottom, bottom_linesize, dst, dst_linesize, width, end, x
mov widthd, dword widthm
%else
cglobal blend_%1, 5, 7, %2, top, top_linesize, bottom, bottom_linesize, dst, end, x
%define dst_linesizeq r5mp
%define widthq r6mp
%endif
mov endd, dword r8m
add topq, widthq
add bottomq, widthq
add dstq, widthq
sub endd, dword r7m ; start
neg widthq
%endmacro
%macro BLEND_END 0
add topq, top_linesizeq
add bottomq, bottom_linesizeq
add dstq, dst_linesizeq
sub endd, 1
jg .nextrow
REP_RET
%endmacro
%macro BLEND_SIMPLE 2
BLEND_INIT %1, 2
.nextrow:
mov xq, widthq
.loop:
movu m0, [topq + xq]
movu m1, [bottomq + xq]
p%2 m0, m1
mova [dstq + xq], m0
add xq, mmsize
jl .loop
BLEND_END
%endmacro
INIT_XMM sse2
BLEND_SIMPLE xor, xor
BLEND_SIMPLE or, or
BLEND_SIMPLE and, and
BLEND_SIMPLE addition, addusb
BLEND_SIMPLE subtract, subusb
BLEND_SIMPLE darken, minub
BLEND_SIMPLE lighten, maxub
BLEND_INIT difference128, 4
pxor m2, m2
mova m3, [pw_128]
.nextrow:
mov xq, widthq
.loop:
movh m0, [topq + xq]
movh m1, [bottomq + xq]
punpcklbw m0, m2
punpcklbw m1, m2
paddw m0, m3
psubw m0, m1
packuswb m0, m0
movh [dstq + xq], m0
add xq, mmsize / 2
jl .loop
BLEND_END
%macro MULTIPLY 3 ; a, b, pw_1
pmullw %1, %2 ; xxxxxxxx a * b
paddw %1, %3
mova %2, %1
psrlw %2, 8
paddw %1, %2
psrlw %1, 8 ; 00xx00xx a * b / 255
%endmacro
BLEND_INIT multiply, 4
pxor m2, m2
mova m3, [pw_1]
.nextrow:
mov xq, widthq
.loop:
; word
; |--|
movh m0, [topq + xq] ; 0000xxxx
movh m1, [bottomq + xq]
punpcklbw m0, m2 ; 00xx00xx
punpcklbw m1, m2
MULTIPLY m0, m1, m3
packuswb m0, m0 ; 0000xxxx
movh [dstq + xq], m0
add xq, mmsize / 2
jl .loop
BLEND_END
BLEND_INIT average, 3
pxor m2, m2
.nextrow:
mov xq, widthq
.loop:
movh m0, [topq + xq]
movh m1, [bottomq + xq]
punpcklbw m0, m2
punpcklbw m1, m2
paddw m0, m1
psrlw m0, 1
packuswb m0, m0
movh [dstq + xq], m0
add xq, mmsize / 2
jl .loop
BLEND_END
BLEND_INIT addition128, 4
pxor m2, m2
mova m3, [pw_128]
.nextrow:
mov xq, widthq
.loop:
movh m0, [topq + xq]
movh m1, [bottomq + xq]
punpcklbw m0, m2
punpcklbw m1, m2
paddw m0, m1
psubw m0, m3
packuswb m0, m0
movh [dstq + xq], m0
add xq, mmsize / 2
jl .loop
BLEND_END
BLEND_INIT hardmix, 5
mova m2, [pb_255]
mova m3, [pb_128]
mova m4, [pb_127]
.nextrow:
mov xq, widthq
.loop:
movu m0, [topq + xq]
movu m1, [bottomq + xq]
pxor m1, m4
pxor m0, m3
pcmpgtb m1, m0
pxor m1, m2
mova [dstq + xq], m1
add xq, mmsize
jl .loop
BLEND_END
BLEND_INIT phoenix, 4
mova m3, [pb_255]
.nextrow:
mov xq, widthq
.loop:
movu m0, [topq + xq]
movu m1, [bottomq + xq]
mova m2, m0
pminub m0, m1
pmaxub m1, m2
mova m2, m3
psubusb m2, m1
paddusb m2, m0
mova [dstq + xq], m2
add xq, mmsize
jl .loop
BLEND_END
%macro BLEND_ABS 0
BLEND_INIT difference, 3
pxor m2, m2
.nextrow:
mov xq, widthq
.loop:
movh m0, [topq + xq]
movh m1, [bottomq + xq]
punpcklbw m0, m2
punpcklbw m1, m2
psubw m0, m1
ABS1 m0, m1
packuswb m0, m0
movh [dstq + xq], m0
add xq, mmsize / 2
jl .loop
BLEND_END
BLEND_INIT negation, 5
pxor m2, m2
mova m4, [pw_255]
.nextrow:
mov xq, widthq
.loop:
movh m0, [topq + xq]
movh m1, [bottomq + xq]
punpcklbw m0, m2
punpcklbw m1, m2
mova m3, m4
psubw m3, m0
psubw m3, m1
ABS1 m3, m1
mova m0, m4
psubw m0, m3
packuswb m0, m0
movh [dstq + xq], m0
add xq, mmsize / 2
jl .loop
BLEND_END
%endmacro
INIT_XMM sse2
BLEND_ABS
INIT_XMM ssse3
BLEND_ABS
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