mirror of https://git.ffmpeg.org/ffmpeg.git
58 lines
1.7 KiB
NASM
58 lines
1.7 KiB
NASM
;*****************************************************************************
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;* x86-optimized functions for pp7 filter
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;*
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;* Copyright (c) 2005 Michael Niedermayer <michaelni@gmx.at>
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;*
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;* This file is part of FFmpeg.
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;*
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;* FFmpeg is free software; you can redistribute it and/or modify
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;* it under the terms of the GNU General Public License as published by
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;* the Free Software Foundation; either version 2 of the License, or
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;* (at your option) any later version.
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;*
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;* FFmpeg 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
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;* GNU General Public License for more details.
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;*
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;* You should have received a copy of the GNU General Public License along
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;* with FFmpeg; if not, write to the Free Software Foundation, Inc.,
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;* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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;******************************************************************************
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%include "libavutil/x86/x86util.asm"
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SECTION .text
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INIT_MMX mmx
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;void ff_pp7_dctB_mmx(int16_t *dst, int16_t *src)
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cglobal pp7_dctB, 2, 2, 0, dst, src
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movq m0, [srcq]
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movq m1, [srcq+mmsize*1]
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paddw m0, [srcq+mmsize*6]
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paddw m1, [srcq+mmsize*5]
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movq m2, [srcq+mmsize*2]
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movq m3, [srcq+mmsize*3]
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paddw m2, [srcq+mmsize*4]
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paddw m3, m3
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movq m4, m3
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psubw m3, m0
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paddw m4, m0
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movq m0, m2
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psubw m2, m1
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paddw m0, m1
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movq m1, m4
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psubw m4, m0
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paddw m1, m0
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movq m0, m3
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psubw m3, m2
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psubw m3, m2
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paddw m2, m0
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paddw m2, m0
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movq [dstq], m1
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movq [dstq+mmsize*2], m4
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movq [dstq+mmsize*1], m2
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movq [dstq+mmsize*3], m3
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RET
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