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https://github.com/FFmpeg/FFmpeg.git
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84 lines
2.5 KiB
NASM
84 lines
2.5 KiB
NASM
;******************************************************************************
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;* MMX optimized deinterlacing functions
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;* Copyright (c) 2010 Vitor Sessak
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;* Copyright (c) 2002 Michael Niedermayer
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;*
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;* This file is part of Libav.
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;*
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;* Libav is free software; you can redistribute it and/or
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;* modify it under the terms of the GNU Lesser General Public
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;* License as published by the Free Software Foundation; either
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;* version 2.1 of the License, or (at your option) any later version.
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;*
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;* Libav is distributed in the hope that it will be useful,
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;* but WITHOUT ANY WARRANTY; without even the implied warranty of
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;* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;* Lesser General Public License for more details.
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;*
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;* You should have received a copy of the GNU Lesser General Public
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;* License along with Libav; if not, write to the Free Software
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;* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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;******************************************************************************
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%include "x86inc.asm"
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%include "x86util.asm"
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SECTION_RODATA
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cextern pw_4
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SECTION .text
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%macro DEINTERLACE 1
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%ifidn %1, inplace
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;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)
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cglobal deinterlace_line_inplace_mmx, 6,6,7, lum_m4, lum_m3, lum_m2, lum_m1, lum, size
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%else
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;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)
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cglobal deinterlace_line_mmx, 7,7,7, dst, lum_m4, lum_m3, lum_m2, lum_m1, lum, size
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%endif
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pxor mm7, mm7
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movq mm6, [pw_4]
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.nextrow
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movd mm0, [lum_m4q]
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movd mm1, [lum_m3q]
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movd mm2, [lum_m2q]
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%ifidn %1, inplace
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movd [lum_m4q], mm2
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%endif
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movd mm3, [lum_m1q]
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movd mm4, [lumq]
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punpcklbw mm0, mm7
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punpcklbw mm1, mm7
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punpcklbw mm2, mm7
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punpcklbw mm3, mm7
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punpcklbw mm4, mm7
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paddw mm1, mm3
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psllw mm2, 1
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paddw mm0, mm4
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psllw mm1, 2
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paddw mm2, mm6
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paddw mm1, mm2
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psubusw mm1, mm0
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psrlw mm1, 3
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packuswb mm1, mm7
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%ifidn %1, inplace
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movd [lum_m2q], mm1
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%else
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movd [dstq], mm1
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add dstq, 4
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%endif
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add lum_m4q, 4
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add lum_m3q, 4
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add lum_m2q, 4
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add lum_m1q, 4
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add lumq, 4
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sub sized, 4
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jg .nextrow
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REP_RET
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%endmacro
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DEINTERLACE ""
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DEINTERLACE inplace
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