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;******************************************************************************
;* SIMD-optimized deinterlacing functions
;* Copyright (c) 2010 Vitor Sessak
;* Copyright (c) 2002 Michael Niedermayer
;*
;* This file is part of Libav.
;*
;* Libav 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.
;*
;* Libav 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 Libav; 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
cextern pw_4
SECTION .text
%macro DEINTERLACE 1
%ifidn %1, inplace
;void ff_deinterlace_line_inplace_mmx(const uint8_t *lum_m4, const uint8_t *lum_m3, const uint8_t *lum_m2, const uint8_t *lum_m1, const uint8_t *lum, int size)
cglobal deinterlace_line_inplace_mmx, 6,6,7, lum_m4, lum_m3, lum_m2, lum_m1, lum, size
%else
;void ff_deinterlace_line_mmx(uint8_t *dst, const uint8_t *lum_m4, const uint8_t *lum_m3, const uint8_t *lum_m2, const uint8_t *lum_m1, const uint8_t *lum, int size)
cglobal deinterlace_line_mmx, 7,7,7, dst, lum_m4, lum_m3, lum_m2, lum_m1, lum, size
%endif
pxor mm7, mm7
movq mm6, [pw_4]
.nextrow:
movd mm0, [lum_m4q]
movd mm1, [lum_m3q]
movd mm2, [lum_m2q]
%ifidn %1, inplace
movd [lum_m4q], mm2
%endif
movd mm3, [lum_m1q]
movd mm4, [lumq]
punpcklbw mm0, mm7
punpcklbw mm1, mm7
punpcklbw mm2, mm7
punpcklbw mm3, mm7
punpcklbw mm4, mm7
paddw mm1, mm3
psllw mm2, 1
paddw mm0, mm4
psllw mm1, 2
paddw mm2, mm6
paddw mm1, mm2
psubusw mm1, mm0
psrlw mm1, 3
packuswb mm1, mm7
%ifidn %1, inplace
movd [lum_m2q], mm1
%else
movd [dstq], mm1
add dstq, 4
%endif
add lum_m4q, 4
add lum_m3q, 4
add lum_m2q, 4
add lum_m1q, 4
add lumq, 4
sub sized, 4
jg .nextrow
REP_RET
%endmacro
DEINTERLACE ""
DEINTERLACE inplace
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