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;*****************************************************************************
;* x86-optimized functions for interlace filter
;*
;* Copyright (C) 2014 Kieran Kunhya <kierank@obe.tv>
;* Copyright (c) 2014 Michael Niedermayer <michaelni@gmx.at>
;* Copyright (c) 2017 Thomas Mundt <tmundt75@gmail.com>
;*
;* This file is part of FFmpeg.
;*
;* FFmpeg is free software; you can redistribute it and/or modify
;* it under the terms of the GNU General Public License as published by
;* the Free Software Foundation; either version 2 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 General Public License for more details.
;*
;* You should have received a copy of the GNU 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_4: times 8 dw 4
SECTION .text
%macro LOWPASS_LINE 0
cglobal lowpass_line, 5, 5, 7, dst, h, src, mref, pref
add dstq, hq
add srcq, hq
add mrefq, srcq
add prefq, srcq
neg hq
pcmpeqb m6, m6
.loop:
mova m0, [mrefq+hq]
mova m1, [mrefq+hq+mmsize]
pavgb m0, [prefq+hq]
pavgb m1, [prefq+hq+mmsize]
pxor m0, m6
pxor m1, m6
pxor m2, m6, [srcq+hq]
pxor m3, m6, [srcq+hq+mmsize]
pavgb m0, m2
pavgb m1, m3
pxor m0, m6
pxor m1, m6
mova [dstq+hq], m0
mova [dstq+hq+mmsize], m1
add hq, 2*mmsize
jl .loop
REP_RET
%endmacro
%macro LOWPASS_LINE_COMPLEX 0
cglobal lowpass_line_complex, 5, 5, 7, dst, h, src, mref, pref
pxor m6, m6
.loop:
mova m0, [srcq+mrefq]
mova m2, [srcq+prefq]
mova m1, m0
mova m3, m2
punpcklbw m0, m6
punpcklbw m2, m6
punpckhbw m1, m6
punpckhbw m3, m6
paddw m0, m2
paddw m1, m3
mova m2, [srcq+mrefq*2]
mova m4, [srcq+prefq*2]
mova m3, m2
mova m5, m4
punpcklbw m2, m6
punpcklbw m4, m6
punpckhbw m3, m6
punpckhbw m5, m6
paddw m2, m4
paddw m3, m5
mova m4, [srcq]
mova m5, m4
punpcklbw m4, m6
punpckhbw m5, m6
paddw m0, m4
paddw m1, m5
psllw m0, 1
psllw m1, 1
psllw m4, 2
psllw m5, 2
paddw m0, m4
paddw m1, m5
paddw m0, [pw_4]
paddw m1, [pw_4]
psubusw m0, m2
psubusw m1, m3
psrlw m0, 3
psrlw m1, 3
packuswb m0, m1
mova [dstq], m0
add dstq, mmsize
add srcq, mmsize
sub hd, mmsize
jg .loop
REP_RET
%endmacro
INIT_XMM sse2
LOWPASS_LINE
INIT_XMM avx
LOWPASS_LINE
INIT_XMM sse2
LOWPASS_LINE_COMPLEX
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