mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-26 19:01:44 +02:00
96 lines
2.7 KiB
NASM
96 lines
2.7 KiB
NASM
;*****************************************************************************
|
|
;* SIMD-optimized MPEG encoding functions
|
|
;*****************************************************************************
|
|
;* Copyright (c) 2000, 2001 Fabrice Bellard
|
|
;* Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
|
|
;*
|
|
;* 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 .text
|
|
|
|
INIT_MMX mmx
|
|
; int ff_pix_sum16_mmx(uint8_t *pix, int line_size)
|
|
cglobal pix_sum16, 2, 3
|
|
movsxdifnidn r1, r1d
|
|
mov r2, r1
|
|
neg r2
|
|
shl r2, 4
|
|
sub r0, r2
|
|
pxor m7, m7
|
|
pxor m6, m6
|
|
.loop:
|
|
mova m0, [r0+r2+0]
|
|
mova m1, [r0+r2+0]
|
|
mova m2, [r0+r2+8]
|
|
mova m3, [r0+r2+8]
|
|
punpcklbw m0, m7
|
|
punpckhbw m1, m7
|
|
punpcklbw m2, m7
|
|
punpckhbw m3, m7
|
|
paddw m1, m0
|
|
paddw m3, m2
|
|
paddw m3, m1
|
|
paddw m6, m3
|
|
add r2, r1
|
|
js .loop
|
|
mova m5, m6
|
|
psrlq m6, 32
|
|
paddw m6, m5
|
|
mova m5, m6
|
|
psrlq m6, 16
|
|
paddw m6, m5
|
|
movd eax, m6
|
|
and eax, 0xffff
|
|
RET
|
|
|
|
INIT_MMX mmx
|
|
; int ff_pix_norm1_mmx(uint8_t *pix, int line_size)
|
|
cglobal pix_norm1, 2, 4
|
|
movsxdifnidn r1, r1d
|
|
mov r2, 16
|
|
pxor m0, m0
|
|
pxor m7, m7
|
|
.loop:
|
|
mova m2, [r0+0]
|
|
mova m3, [r0+8]
|
|
mova m1, m2
|
|
punpckhbw m1, m0
|
|
punpcklbw m2, m0
|
|
mova m4, m3
|
|
punpckhbw m3, m0
|
|
punpcklbw m4, m0
|
|
pmaddwd m1, m1
|
|
pmaddwd m2, m2
|
|
pmaddwd m3, m3
|
|
pmaddwd m4, m4
|
|
paddd m2, m1
|
|
paddd m4, m3
|
|
paddd m7, m2
|
|
add r0, r1
|
|
paddd m7, m4
|
|
dec r2
|
|
jne .loop
|
|
mova m1, m7
|
|
psrlq m7, 32
|
|
paddd m1, m7
|
|
movd eax, m1
|
|
RET
|
|
|