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;*****************************************************************************
;* x86-optimized functions for threshold filter
;*
;* Copyright (C) 2017 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
pb_128: times 16 db 128
pb_128_0 : times 8 db 0, 128
SECTION .text
;%1 depth (8 or 16) ; %2 b or w ; %3 constant
%macro THRESHOLD 3
%if ARCH_X86_64
cglobal threshold%1, 10, 13, 5, in, threshold, min, max, out, ilinesize, tlinesize, flinesize, slinesize, olinesize, w, h, x
mov wd, dword wm
mov hd, dword hm
%else
cglobal threshold%1, 5, 7, 5, in, threshold, min, max, out, w, x
mov wd, r10m
%define ilinesizeq r5mp
%define tlinesizeq r6mp
%define flinesizeq r7mp
%define slinesizeq r8mp
%define olinesizeq r9mp
%define hd r11mp
%endif
VBROADCASTI128 m4, [%3]
%if %1 == 16
add wq, wq ; w *= 2 (16 bits instead of 8)
%endif
add inq, wq
add thresholdq, wq
add minq, wq
add maxq, wq
add outq, wq
neg wq
.nextrow:
mov xq, wq
.loop:
movu m1, [inq + xq]
movu m0, [thresholdq + xq]
movu m2, [minq + xq]
movu m3, [maxq + xq]
pxor m0, m4
pxor m1, m4
pcmpgt%2 m0, m1
PBLENDVB m3, m2, m0
movu [outq + xq], m3
add xq, mmsize
jl .loop
add inq, ilinesizeq
add thresholdq, tlinesizeq
add minq, flinesizeq
add maxq, slinesizeq
add outq, olinesizeq
sub hd, 1
jg .nextrow
RET
%endmacro
INIT_XMM sse4
THRESHOLD 8, b, pb_128
THRESHOLD 16, w, pb_128_0
%if HAVE_AVX2_EXTERNAL
INIT_YMM avx2
THRESHOLD 8, b, pb_128
THRESHOLD 16, w, pb_128_0
%endif
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