mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-25 16:52:31 +00:00
77 lines
2.5 KiB
ArmAsm
77 lines
2.5 KiB
ArmAsm
|
/*
|
||
|
|
* Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
|
||
|
|
*
|
||
|
|
* 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/arm/asm.S"
|
||
|
|
|
||
|
|
function ff_pix_norm1_armv6, export=1
|
||
|
|
push {r4-r6, lr}
|
||
|
|
mov r12, #16
|
||
|
|
mov lr, #0
|
||
|
|
1:
|
||
|
|
ldm r0, {r2-r5}
|
||
|
|
uxtb16 r6, r2
|
||
|
|
uxtb16 r2, r2, ror #8
|
||
|
|
smlad lr, r6, r6, lr
|
||
|
|
uxtb16 r6, r3
|
||
|
|
smlad lr, r2, r2, lr
|
||
|
|
uxtb16 r3, r3, ror #8
|
||
|
|
smlad lr, r6, r6, lr
|
||
|
|
uxtb16 r6, r4
|
||
|
|
smlad lr, r3, r3, lr
|
||
|
|
uxtb16 r4, r4, ror #8
|
||
|
|
smlad lr, r6, r6, lr
|
||
|
|
uxtb16 r6, r5
|
||
|
|
smlad lr, r4, r4, lr
|
||
|
|
uxtb16 r5, r5, ror #8
|
||
|
|
smlad lr, r6, r6, lr
|
||
|
|
subs r12, r12, #1
|
||
|
|
add r0, r0, r1
|
||
|
|
smlad lr, r5, r5, lr
|
||
|
|
bgt 1b
|
||
|
|
|
||
|
|
mov r0, lr
|
||
|
|
pop {r4-r6, pc}
|
||
|
|
endfunc
|
||
|
|
|
||
|
|
function ff_pix_sum_armv6, export=1
|
||
|
|
push {r4-r7, lr}
|
||
|
|
mov r12, #16
|
||
|
|
mov r2, #0
|
||
|
|
mov r3, #0
|
||
|
|
mov lr, #0
|
||
|
|
ldr r4, [r0]
|
||
|
|
1:
|
||
|
|
subs r12, r12, #1
|
||
|
|
ldr r5, [r0, #4]
|
||
|
|
usada8 r2, r4, lr, r2
|
||
|
|
ldr r6, [r0, #8]
|
||
|
|
usada8 r3, r5, lr, r3
|
||
|
|
ldr r7, [r0, #12]
|
||
|
|
usada8 r2, r6, lr, r2
|
||
|
|
beq 2f
|
||
|
|
ldr_pre r4, r0, r1
|
||
|
|
usada8 r3, r7, lr, r3
|
||
|
|
bgt 1b
|
||
|
|
2:
|
||
|
|
usada8 r3, r7, lr, r3
|
||
|
|
add r0, r2, r3
|
||
|
|
pop {r4-r7, pc}
|
||
|
|
endfunc
|