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;*****************************************************************************
;* x86-optimized functions for yadif filter
;*
;* Copyright (C) 2006 Michael Niedermayer <michaelni@gmx.at>
;* Copyright (c) 2013 Daniel Kang <daniel.d.kang@gmail.com>
;* Copyright (c) 2011-2013 James Darnley <james.darnley@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
pw_1: times 8 dw 1
pw_8000: times 8 dw 0x8000
pd_1: times 4 dd 1
pd_8000: times 4 dd 0x8000
SECTION .text
%macro PABS 2
%if cpuflag(ssse3)
pabsd %1, %1
%else
pxor %2, %2
pcmpgtd %2, %1
pxor %1, %2
psubd %1, %2
%endif
%endmacro
%macro PACK 1
%if cpuflag(sse4)
packusdw %1, %1
%else
psubd %1, [pd_8000]
packssdw %1, %1
paddw %1, [pw_8000]
%endif
%endmacro
%macro PMAXUW 2
%if cpuflag(sse4)
pmaxuw %1, %2
%else
psubusw %1, %2
paddusw %1, %2
%endif
%endmacro
%macro CHECK 2
movu m2, [curq+t1+%1*2]
movu m3, [curq+t0+%2*2]
mova m4, m2
mova m5, m2
pxor m4, m3
pavgw m5, m3
pand m4, [pw_1]
psubusw m5, m4
RSHIFT m5, 2
punpcklwd m5, m7
mova m4, m2
psubusw m2, m3
psubusw m3, m4
PMAXUW m2, m3
mova m3, m2
mova m4, m2
RSHIFT m3, 2
RSHIFT m4, 4
punpcklwd m2, m7
punpcklwd m3, m7
punpcklwd m4, m7
paddd m2, m3
paddd m2, m4
%endmacro
%macro CHECK1 0
mova m3, m0
pcmpgtd m3, m2
PMINSD m0, m2, m6
mova m6, m3
pand m5, m3
pandn m3, m1
por m3, m5
mova m1, m3
%endmacro
%macro CHECK2 0
paddd m6, [pd_1]
pslld m6, 30
paddd m2, m6
mova m3, m0
pcmpgtd m3, m2
PMINSD m0, m2, m4
pand m5, m3
pandn m3, m1
por m3, m5
mova m1, m3
%endmacro
; This version of CHECK2 has 3 fewer instructions on sets older than SSE4 but I
; am not sure whether it is any faster. A rewrite or refactor of the filter
; code should make it possible to eliminate the move instruction at the end. It
; exists to satisfy the expectation that the "score" values are in m1.
; %macro CHECK2 0
; mova m3, m0
; pcmpgtd m0, m2
; pand m0, m6
; mova m6, m0
; pand m5, m6
; pand m2, m0
; pandn m6, m1
; pandn m0, m3
; por m6, m5
; por m0, m2
; mova m1, m6
; %endmacro
%macro LOAD 2
movh %1, %2
punpcklwd %1, m7
%endmacro
%macro FILTER 3
.loop%1:
pxor m7, m7
LOAD m0, [curq+t1]
LOAD m1, [curq+t0]
LOAD m2, [%2]
LOAD m3, [%3]
mova m4, m3
paddd m3, m2
psrad m3, 1
mova [rsp+ 0], m0
mova [rsp+16], m3
mova [rsp+32], m1
psubd m2, m4
PABS m2, m4
LOAD m3, [prevq+t1]
LOAD m4, [prevq+t0]
psubd m3, m0
psubd m4, m1
PABS m3, m5
PABS m4, m5
paddd m3, m4
psrld m2, 1
psrld m3, 1
PMAXSD m2, m3, m6
LOAD m3, [nextq+t1]
LOAD m4, [nextq+t0]
psubd m3, m0
psubd m4, m1
PABS m3, m5
PABS m4, m5
paddd m3, m4
psrld m3, 1
PMAXSD m2, m3, m6
mova [rsp+48], m2
paddd m1, m0
paddd m0, m0
psubd m0, m1
psrld m1, 1
PABS m0, m2
movu m2, [curq+t1-1*2]
movu m3, [curq+t0-1*2]
mova m4, m2
psubusw m2, m3
psubusw m3, m4
PMAXUW m2, m3
mova m3, m2
RSHIFT m3, 4
punpcklwd m2, m7
punpcklwd m3, m7
paddd m0, m2
paddd m0, m3
psubd m0, [pd_1]
CHECK -2, 0
CHECK1
CHECK -3, 1
CHECK2
CHECK 0, -2
CHECK1
CHECK 1, -3
CHECK2
mova m6, [rsp+48]
cmp DWORD r8m, 2
jge .end%1
LOAD m2, [%2+t1*2]
LOAD m4, [%3+t1*2]
LOAD m3, [%2+t0*2]
LOAD m5, [%3+t0*2]
paddd m2, m4
paddd m3, m5
psrld m2, 1
psrld m3, 1
mova m4, [rsp+ 0]
mova m5, [rsp+16]
mova m7, [rsp+32]
psubd m2, m4
psubd m3, m7
mova m0, m5
psubd m5, m4
psubd m0, m7
mova m4, m2
PMINSD m2, m3, m7
PMAXSD m3, m4, m7
PMAXSD m2, m5, m7
PMINSD m3, m5, m7
PMAXSD m2, m0, m7
PMINSD m3, m0, m7
pxor m4, m4
PMAXSD m6, m3, m7
psubd m4, m2
PMAXSD m6, m4, m7
.end%1:
mova m2, [rsp+16]
mova m3, m2
psubd m2, m6
paddd m3, m6
PMAXSD m1, m2, m7
PMINSD m1, m3, m7
PACK m1
movh [dstq], m1
add dstq, mmsize/2
add prevq, mmsize/2
add curq, mmsize/2
add nextq, mmsize/2
sub DWORD r4m, mmsize/4
jg .loop%1
%endmacro
%macro YADIF 0
%if ARCH_X86_32
cglobal yadif_filter_line_16bit, 4, 6, 8, 80, dst, prev, cur, next, w, \
prefs, mrefs, parity, mode
%else
cglobal yadif_filter_line_16bit, 4, 7, 8, 80, dst, prev, cur, next, w, \
prefs, mrefs, parity, mode
%endif
%if ARCH_X86_32
mov r4, r5mp
mov r5, r6mp
DECLARE_REG_TMP 4,5
%else
movsxd r5, DWORD r5m
movsxd r6, DWORD r6m
DECLARE_REG_TMP 5,6
%endif
cmp DWORD paritym, 0
je .parity0
FILTER 1, prevq, curq
jmp .ret
.parity0:
FILTER 0, curq, nextq
.ret:
RET
%endmacro
INIT_XMM sse4
YADIF
INIT_XMM ssse3
YADIF
INIT_XMM sse2
YADIF
%if ARCH_X86_32
INIT_MMX mmxext
YADIF
%endif
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