aac5773f
 hucm
功能基本完成，接口待打磨
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;******************************************************************************
;* SIMD-optimized SVQ1 encoder functions
;* Copyright (c) 2007 Loren Merritt
;*
;* 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 .text
%macro SSD_INT8_VS_INT16 0
cglobal ssd_int8_vs_int16, 3, 3, 3, pix1, pix2, size
pxor m0, m0
.loop:
sub sizeq, 8
movq m1, [pix1q + sizeq]
mova m2, [pix2q + sizeq*2]
%if mmsize == 8
movq m3, [pix2q + sizeq*2 + mmsize]
punpckhbw m4, m1
punpcklbw m1, m1
psraw m4, 8
psraw m1, 8
psubw m3, m4
psubw m2, m1
pmaddwd m3, m3
pmaddwd m2, m2
paddd m0, m3
paddd m0, m2
%else
punpcklbw m1, m1
psraw m1, 8
psubw m2, m1
pmaddwd m2, m2
paddd m0, m2
%endif
jg .loop
HADDD m0, m1
movd eax, m0
RET
%endmacro
INIT_MMX mmx
SSD_INT8_VS_INT16
INIT_XMM sse2
SSD_INT8_VS_INT16
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