115 lines
3.2 KiB
NASM
115 lines
3.2 KiB
NASM
;******************************************************************************
|
|
;* x86-optimized horizontal line scaling functions
|
|
;* Copyright 2020 Google LLC
|
|
;* Copyright (c) 2011 Ronald S. Bultje <rsbultje@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 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 32
|
|
|
|
swizzle: dd 0, 4, 1, 5, 2, 6, 3, 7
|
|
four: times 8 dd 4
|
|
|
|
SECTION .text
|
|
|
|
;-----------------------------------------------------------------------------
|
|
; horizontal line scaling
|
|
;
|
|
; void hscale8to15_<filterSize>_<opt>
|
|
; (SwsContext *c, int16_t *dst,
|
|
; int dstW, const uint8_t *src,
|
|
; const int16_t *filter,
|
|
; const int32_t *filterPos, int filterSize);
|
|
;
|
|
; Scale one horizontal line. Input is 8-bit width Filter is 14 bits. Output is
|
|
; 15 bits (in int16_t). Each output pixel is generated from $filterSize input
|
|
; pixels, the position of the first pixel is given in filterPos[nOutputPixel].
|
|
;-----------------------------------------------------------------------------
|
|
|
|
%macro SCALE_FUNC 1
|
|
cglobal hscale8to15_%1, 7, 9, 16, pos0, dst, w, srcmem, filter, fltpos, fltsize, count, inner
|
|
pxor m0, m0
|
|
mova m15, [swizzle]
|
|
xor countq, countq
|
|
movsxd wq, wd
|
|
%ifidn %1, X4
|
|
mova m14, [four]
|
|
shr fltsized, 2
|
|
%endif
|
|
.loop:
|
|
movu m1, [fltposq]
|
|
movu m2, [fltposq+32]
|
|
%ifidn %1, X4
|
|
pxor m9, m9
|
|
pxor m10, m10
|
|
pxor m11, m11
|
|
pxor m12, m12
|
|
xor innerq, innerq
|
|
.innerloop:
|
|
%endif
|
|
vpcmpeqd m13, m13
|
|
vpgatherdd m3,[srcmemq + m1], m13
|
|
vpcmpeqd m13, m13
|
|
vpgatherdd m4,[srcmemq + m2], m13
|
|
vpunpcklbw m5, m3, m0
|
|
vpunpckhbw m6, m3, m0
|
|
vpunpcklbw m7, m4, m0
|
|
vpunpckhbw m8, m4, m0
|
|
vpmaddwd m5, m5, [filterq]
|
|
vpmaddwd m6, m6, [filterq + 32]
|
|
vpmaddwd m7, m7, [filterq + 64]
|
|
vpmaddwd m8, m8, [filterq + 96]
|
|
add filterq, 0x80
|
|
%ifidn %1, X4
|
|
paddd m9, m5
|
|
paddd m10, m6
|
|
paddd m11, m7
|
|
paddd m12, m8
|
|
paddd m1, m14
|
|
paddd m2, m14
|
|
add innerq, 1
|
|
cmp innerq, fltsizeq
|
|
jl .innerloop
|
|
vphaddd m5, m9, m10
|
|
vphaddd m6, m11, m12
|
|
%else
|
|
vphaddd m5, m5, m6
|
|
vphaddd m6, m7, m8
|
|
%endif
|
|
vpsrad m5, 7
|
|
vpsrad m6, 7
|
|
vpackssdw m5, m5, m6
|
|
vpermd m5, m15, m5
|
|
vmovdqu [dstq + countq * 2], m5
|
|
add fltposq, 0x40
|
|
add countq, 0x10
|
|
cmp countq, wq
|
|
jl .loop
|
|
REP_RET
|
|
%endmacro
|
|
|
|
%if ARCH_X86_64
|
|
%if HAVE_AVX2_EXTERNAL
|
|
INIT_YMM avx2
|
|
SCALE_FUNC 4
|
|
SCALE_FUNC X4
|
|
%endif
|
|
%endif
|