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https://github.com/FFmpeg/FFmpeg.git
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f0b7882ceb
The .text section is already 16-byte aligned by default on all supported platforms so `SECTION_TEXT` isn't any different from `SECTION .text`.
62 lines
1.7 KiB
NASM
62 lines
1.7 KiB
NASM
;******************************************************************************
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;* SIMD-optimized SVQ1 encoder functions
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;* Copyright (c) 2007 Loren Merritt
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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
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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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;* 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 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 FFmpeg; 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 "libavutil/x86/x86util.asm"
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SECTION .text
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%macro SSD_INT8_VS_INT16 0
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cglobal ssd_int8_vs_int16, 3, 3, 3, pix1, pix2, size
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pxor m0, m0
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.loop:
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sub sizeq, 8
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movq m1, [pix1q + sizeq]
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mova m2, [pix2q + sizeq*2]
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%if mmsize == 8
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movq m3, [pix2q + sizeq*2 + mmsize]
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punpckhbw m4, m1
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punpcklbw m1, m1
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psraw m4, 8
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psraw m1, 8
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psubw m3, m4
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psubw m2, m1
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pmaddwd m3, m3
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pmaddwd m2, m2
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paddd m0, m3
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paddd m0, m2
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%else
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punpcklbw m1, m1
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psraw m1, 8
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psubw m2, m1
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pmaddwd m2, m2
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paddd m0, m2
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%endif
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jg .loop
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HADDD m0, m1
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movd eax, m0
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RET
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%endmacro
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INIT_MMX mmx
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SSD_INT8_VS_INT16
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INIT_XMM sse2
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SSD_INT8_VS_INT16
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