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;************************************************************************
;* SIMD-optimized HuffYUV encoding functions
;* Copyright (c) 2000, 2001 Fabrice Bellard
;* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
;*
;* MMX optimization by Nick Kurshev <nickols_k@mail.ru>
;* Conversion to NASM format by Tiancheng "Timothy" Gu <timothygu99@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
;* 51, Inc., Foundation Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
;******************************************************************************
%include "libavutil/x86/x86util.asm"
SECTION .text
; void ff_diff_int16(uint8_t *dst, const uint8_t *src1, const uint8_t *src2,
; unsigned mask, int w);
%macro INT16_LOOP 2 ; %1 = a/u (aligned/unaligned), %2 = add/sub
movd m4, maskd
SPLATW m4, m4
add wd, wd
test wq, 2*mmsize - 1
jz %%.tomainloop
push tmpq
%%.wordloop:
sub wq, 2
%ifidn %2, add
mov tmpw, [srcq+wq]
add tmpw, [dstq+wq]
%else
mov tmpw, [src1q+wq]
sub tmpw, [src2q+wq]
%endif
and tmpw, maskw
mov [dstq+wq], tmpw
test wq, 2*mmsize - 1
jnz %%.wordloop
pop tmpq
%%.tomainloop:
%ifidn %2, add
add srcq, wq
%else
add src1q, wq
add src2q, wq
%endif
add dstq, wq
neg wq
jz %%.end
%%.loop:
%ifidn %2, add
mov%1 m0, [srcq+wq]
mov%1 m1, [dstq+wq]
mov%1 m2, [srcq+wq+mmsize]
mov%1 m3, [dstq+wq+mmsize]
%else
mov%1 m0, [src1q+wq]
mov%1 m1, [src2q+wq]
mov%1 m2, [src1q+wq+mmsize]
mov%1 m3, [src2q+wq+mmsize]
%endif
p%2w m0, m1
p%2w m2, m3
pand m0, m4
pand m2, m4
mov%1 [dstq+wq] , m0
mov%1 [dstq+wq+mmsize], m2
add wq, 2*mmsize
jl %%.loop
%%.end:
RET
%endmacro
%if ARCH_X86_32
INIT_MMX mmx
cglobal diff_int16, 5,5,5, dst, src1, src2, mask, w, tmp
INT16_LOOP a, sub
%endif
INIT_XMM sse2
cglobal diff_int16, 5,5,5, dst, src1, src2, mask, w, tmp
test src1q, mmsize-1
jnz .unaligned
test src2q, mmsize-1
jnz .unaligned
test dstq, mmsize-1
jnz .unaligned
INT16_LOOP a, sub
.unaligned:
INT16_LOOP u, sub
INIT_MMX mmxext
cglobal sub_hfyu_median_pred_int16, 7,7,0, dst, src1, src2, mask, w, left, left_top
add wd, wd
movd mm7, maskd
SPLATW mm7, mm7
movq mm0, [src1q]
movq mm2, [src2q]
psllq mm0, 16
psllq mm2, 16
movd mm6, [left_topq]
por mm0, mm6
movd mm6, [leftq]
por mm2, mm6
xor maskq, maskq
.loop:
movq mm1, [src1q + maskq]
movq mm3, [src2q + maskq]
movq mm4, mm2
psubw mm2, mm0
paddw mm2, mm1
pand mm2, mm7
movq mm5, mm4
pmaxsw mm4, mm1
pminsw mm1, mm5
pminsw mm4, mm2
pmaxsw mm4, mm1
psubw mm3, mm4
pand mm3, mm7
movq [dstq + maskq], mm3
add maskq, 8
movq mm0, [src1q + maskq - 2]
movq mm2, [src2q + maskq - 2]
cmp maskq, wq
jb .loop
movzx maskd, word [src1q + wq - 2]
mov [left_topq], maskd
movzx maskd, word [src2q + wq - 2]
mov [leftq], maskd
RET
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